Binding tape



Nov. 22, 1932. P. 1.. ODQNNELL 1,888,432

BINDING TAPE Filed July 5, 1929 gnwn Coz dttoz new Patented Nov. 22, 1932 UNITED STATES PATENT OFFICE PHILIP L. ODONNELL, OF KOB'WOOD, OHIO, ASSIGNOR T0 PARCO SPECIALTY (30., OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS BINDING TAPE Application filed July 5,

This invention relates to an improved edge binding tape such as is used for trimming the exposed edges of shoe uppers and has for an object the provision of a tape which'may be stitched to an upper withoutdifiiculty and which may subsequently be folded about the edge of the upper and adhesively attached thereto. 7

Another object is to provide a novel process of preparing binding tape so as to render it thoroughly efiective and especially applicable to silk binding tapes such as are used for high grade shoes. i

These and other objects are attained by the means and method described herein and illustrated in the accompanying drawing in which:

Fig. l is a perspective view of a prepared section of material from which the tape of j the invention is formed.

Fig. 2 shows a similar section divided to form two lengths of binding tape.

Fig. 3 is a cross sectional view of a fragment of a sewing machine attaching the tape of the invention to a iece of material to be bound or edged with t e tape.

In the binding of the edges of shoe uppers I have found that binding tape having a selvaged edge and one cut or non-selvaged edge most effective. both because the stitching is more secure and because the resultant bead ,or edging is stronger and more attractive.

To prepare the tape of my invention I'employ a double selvaged tape 5 having selvages 6 along opposite longitudinal edges. In order to render the drawing clearly readable the various dimensions of parts'have been exaggerated. In actuality the faces of the body of tape 5 lie in planes several thousandths of an inch lower than the highest portions of the selvage 6 on adjacent sides so that the entire tape has a. relatively broad and very shallow channel 7 extending longitudinally along each face. One of these channels is filled with heat plastic adhesive 8 which also impregnates or 1929. Serial No. 376.027.

coats the body 5 of the tape but does notdiscolor the opposite face of the tape. The 'adhesive 8 is applied sufiiciently heavy so that it does not extend above the top of the selvage 6. 'hen using silk tape as purchased in the open market it has been found that the adhesive 8 may be about three one-thousandths of an inch thick with excellent results. The .material thus prepared is allowed to become cool so that, the adhesive substance is no longer tacky whereupon the tape is divided longitudinally through the impregnated portion to form two binding tapes such as shown in Fig. 2. The binding tape is then ready to be wound on reels or bobbins for use. The tape is sewed through the selvage 6 to the face 9 of a shoe upper or'the like adjacent the edge 10 of said upper. The tape guide 11 of the sewing machine is concave and the untreated face of the binding tape rides over the guide without any tendency to adhesion. The selvage 6 is disposed somewhat diagonally of the path of the needle so that the needle will stitch through the untreated selvage so far as can be determined, At any rate the needle does run smoothly as through untreated tape so long as an excessive amount of adhesive has not been deposited in the channel 7 of the tape. It is difficult to determine whether the needle does or does not pierce some of the impregnated or coated portion of the tape but it is true that when the adhesive is about three one-thousandths of an inch'thick no difiiculty is experienced in stitching the treated tape to the upper in the manner shown and explained.

As a precaution against any possible difficulty in stitching the tape by machine because of possibly excessive adhesive or excessively hot climate conditions, the tape, after impregnation, as explained may have a minutely thin treatment of wax as shown (in exaggerated proportion) at 13 applied at the time of manufacture. This waxing is not applied over the entire adhesive but only opposite over a very narrow edge margin scarcely wider than the selvage. The waxing 13 comprises a mere rubbing of wax rather than an applied layer or appreciable thickness of Wax. The purpose of this waxing is to lubricate the needle and thread duringthe stitching operation. When the tape is thus treated less exacting manufacturing methods may be pursued'and all climatic and shop temperature conditions are met. The tape is in all practical respects to be considered full adhesive coated. The waxing produces the effect of a part coated tape in so far as the stitching operation is concerned but produces better results in the adhesive binding upon the material. e

The tape is stitched to the material without diflicult and when the binding is ready to be turne about the edge of the material in the manner welliknown to those versed in the art, the tape is heated slightly in advance of the operation of the folding machine thereon so that even the most delicately colored or white silk edge binding will not become soiled, nor will the adhesive soil the material to which the edging is applied.

The foregoing disclosure of the tape and method of making and applying it is not to be considered as limited to the exact figures given since they may be varied with different materials used.

What is claimedis:

1. An article of manufacture comprising a binding tape having a beaded selvage, a coating of heat plastic adhesive on one face of the tape, and a narrow coating of a non-fluid lubricating material superposed on a portion of the adhesive adjacent to said beaded edge whereby a sewing needle may penetrate with out adhesion to said adhesive.

2. An article of manufacture comprising a bindin tape having a beaded selvage, a coating of eat plastic adhesive on one face of the tape,.the surface of said coating lying in a plane between that of the face of the tape A and the to of the beaded edge, a narrow coating ofubricating wax superposed on a ortion 'of said adhesive ad acent to the aded edge whereby a sewing needle may penetrate without adhesion to said adhesive. 3. An article of manufacture comprising a binding tape having a beaded selvage, a coating of heat plastic adhesive on one face of the ta e and of such thickness as to extend slig tly below the-top of the beaded edge, a narrow coatin of lubricating wax supe d on the coatmg of adhesive adjacent e beaded edge and of a thickness substantially equal to the difference between the height of the bead above the surface of the tape and the thickness of the coating of adhesive.

4. An article of manufacture comprising a binding tape having beaded selvages along ongitudinal edges, a coating of heat 

